A newborn baby with a body temperature higher than 37.3°C is considered to be febrile, and attention should be paid to the child’s general condition in the case of fever. If the child’s general condition is relatively good, with strong sucking and feeding, normal mental response, and the child’s body temperature can be lowered quickly through warm water baths, lowering the ambient temperature, and reducing clothing, and will not rise again after it is lowered, this situation is not important. If the child’s temperature does not go down or continues to rise after the above physical cooling measures, and there are other symptoms, such as poor response and reduced milk supply, the child should seek medical attention promptly. Because the resistance of newborns is relatively poor, fever indicates the presence of infection, which needs to be treated promptly. In addition, newborns can have dehydration fever if they are dehydrated due to insufficient milk intake after birth, and the temperature will drop to normal after intensive feeding.